java.lang.Object
org.elasticsearch.search.suggest.phrase.SmoothingModel
org.elasticsearch.search.suggest.phrase.StupidBackoff
- All Implemented Interfaces:
NamedWriteable,VersionedNamedWriteable,Writeable,ToXContent,ToXContentFragment
A "stupid-backoff" smoothing model similar to Katz's
Backoff. This model is used as the default if no model is configured.
See N-Gram Smoothing for details.
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Nested Class Summary
Nested classes/interfaces inherited from interface org.elasticsearch.xcontent.ToXContent
ToXContent.DelegatingMapParams, ToXContent.MapParams, ToXContent.ParamsNested classes/interfaces inherited from interface org.elasticsearch.common.io.stream.Writeable
Writeable.Reader<V>, Writeable.Writer<V> -
Field Summary
FieldsModifier and TypeFieldDescriptionstatic final doubleDefault discount parameter forStupidBackoffsmoothingstatic final StringFields inherited from interface org.elasticsearch.xcontent.ToXContent
EMPTY, EMPTY_PARAMS -
Constructor Summary
ConstructorsConstructorDescriptionStupidBackoff(double discount) Creates a Stupid-Backoff smoothing model.Read from a stream. -
Method Summary
Modifier and TypeMethodDescriptionprotected booleandoEquals(SmoothingModel other) subtype specific implementation of "equals".protected intstatic SmoothingModelfromXContent(XContentParser parser) doubleThe minimal version of the recipient this object can be sent toReturns the name of the writeable objectprotected XContentBuilderinnerToXContent(XContentBuilder builder, ToXContent.Params params) voidwriteTo(StreamOutput out) Write this into the StreamOutput.Methods inherited from class org.elasticsearch.search.suggest.phrase.SmoothingModel
equals, hashCode, toXContentMethods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface org.elasticsearch.xcontent.ToXContentFragment
isFragment
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Field Details
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DEFAULT_BACKOFF_DISCOUNT
public static final double DEFAULT_BACKOFF_DISCOUNTDefault discount parameter forStupidBackoffsmoothing- See Also:
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NAME
- See Also:
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Constructor Details
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StupidBackoff
public StupidBackoff(double discount) Creates a Stupid-Backoff smoothing model.- Parameters:
discount- the discount given to lower order ngrams if the higher order ngram doesn't exits
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StupidBackoff
Read from a stream.- Throws:
IOException
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Method Details
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writeTo
Description copied from interface:WriteableWrite this into the StreamOutput.- Throws:
IOException
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getDiscount
public double getDiscount()- Returns:
- the discount parameter of the model
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innerToXContent
protected XContentBuilder innerToXContent(XContentBuilder builder, ToXContent.Params params) throws IOException - Specified by:
innerToXContentin classSmoothingModel- Throws:
IOException
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getWriteableName
Description copied from interface:VersionedNamedWriteableReturns the name of the writeable object -
doEquals
Description copied from class:SmoothingModelsubtype specific implementation of "equals".- Specified by:
doEqualsin classSmoothingModel
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doHashCode
protected int doHashCode()- Specified by:
doHashCodein classSmoothingModel
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fromXContent
- Throws:
IOException
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buildWordScorerFactory
- Specified by:
buildWordScorerFactoryin classSmoothingModel
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getMinimalSupportedVersion
Description copied from interface:VersionedNamedWriteableThe minimal version of the recipient this object can be sent to
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